<p><i>FluxTube</i> is an ad-free YouTube client built with Flutter. Watch YouTube videos without ads, download videos, subscribe to channels, retrieve video dislikes, read comments, save videos, and more.</p><p><br><b>Features:</b></p><ul><li><b>No Login Needed:</b> Use the app without any login requirements.</li><li><b>Ad-Free Experience:</b> Enjoy YouTube videos without interruptions.</li><li><b>Multiple YouTube Services:</b> Switch between NewPipe Extractor, Piped, Invidious, or Explode backends.</li><li><b>Download Videos:</b> Download videos and audio in multiple qualities with FFmpeg merging support.</li><li><b>Background Playback:</b> Continue listening with notification controls (play/pause/seek).</li><li><b>Picture-in-Picture:</b> System PiP mode - auto-enters when pressing home while playing.</li><li><b>Audio Selection Supported:</b> You can now switch between audio tracks when multiple tracks are available (NewPipe Extractor and Piped).</li><li><b>SponsorBlock:</b> Auto-skip sponsored segments, intros, outros, and more.</li><li><b>Multiple Profiles:</b> Separate subscriptions, history, and saved videos per profile.</li><li><b>Channel Subscriptions:</b> Subscribe to your favorite channels.</li><li><b>Dislike Retrieval:</b> See the number of dislikes on videos.</li><li><b>Comment Section:</b> Read video comments and replies.</li><li><b>Save Videos:</b> Save videos to watch later with search and sorting.</li><li><b>Deep Linking:</b> Open YouTube links directly in FluxTube.</li><li><b>NewPipe-Compatible Backup:</b> Import/export data as NewPipe-compatible ZIP files.</li><li><b>Select Your Region:</b> Customize the content based on your region.</li><li><b>Multi-Language Support:</b> 12+ languages supported.</li><li><b>Watch live streams:</b> Enjoy live content.</li><li><b>Video Fit Modes:</b> Contain, cover, fill, fit-width, fit-height.</li><li><b>Customizable Skip Interval:</b> Double-tap to skip 5-60 seconds.</li><li><b>Watch Videos up to 4K Quality:</b> Enj